The Origin of Species by Means of Natural Selection, Or, The Preservation of Favored Races in the Struggle for LifeWerner Company, Book Manufacturers, 1900 - 538페이지 |
도서 본문에서
41개의 결과 중 1 - 3개
73 페이지
... considers as so closely allied to other species as to be of doubtful value : these 63 reputed species range on an ... considered necessary to give to any two forms the rank of species cannot be defined . In genera having more than the ...
... considers as so closely allied to other species as to be of doubtful value : these 63 reputed species range on an ... considered necessary to give to any two forms the rank of species cannot be defined . In genera having more than the ...
271 페이지
... considered by De Candolle to be in other species of the highest systematic importance . Prof. Braun mentions a Fu- mariaceous genus , in which the flowers in the lower part of the spike bear oval , ribbed , one - seeded nutlets ; and in ...
... considered by De Candolle to be in other species of the highest systematic importance . Prof. Braun mentions a Fu- mariaceous genus , in which the flowers in the lower part of the spike bear oval , ribbed , one - seeded nutlets ; and in ...
313 페이지
... considered , and the others will hereafter be considered . They seem to me to partake little of the character of demonstration , and to have little weight in comparison with those in favour of the power of natural selection , aided by ...
... considered , and the others will hereafter be considered . They seem to me to partake little of the character of demonstration , and to have little weight in comparison with those in favour of the power of natural selection , aided by ...
기타 출판본 - 모두 보기
자주 나오는 단어 및 구문
adapted advantage allied animals and plants appear Asa Gray beak become bees believe birds breeds caudicle cause cells characters climate closely colour common crossed cuckoo degree descendants developed difficulty distinct species disuse domestic animals domestic races doubt effects eggs existence extinct extremely facts favourable females flowers forms Fritz Müller genera genus giraffe gradations greater number groups habits Hence hermaphrodites hive-bee important improved increase individuals inhabitants inherited insects instance instincts intercrossing intermediate kind lamellæ large number larger genera larvæ less males manner Melipona Mivart modified natural selection naturalists nearly nest occasionally offspring organisation organs origin Origin of Species parent perfect period pigeons pollen pollen-grains present preserved prey principle probably produced progenitor quadrupeds rank Red Grouse relation remarked resemble rock-pigeon seeds sexes sexual sexual selection slight stamens structure struggle supposed swimbladder tend tendency tion tree variability variations varieties vary widely wings young